Diagnostic approach to mycoplasma pneumonia

First, persistent cough is more frequent, there are no obvious positive signs in the lungs, X-ray examination has patchy or large patchy shadows, and X-ray lesions are obvious, which is the most important feature of this disease;

Second, the white blood cell count is mostly normal or slightly low;

Third, the use of penicillin, streptomycin, and sulfonamides is ineffective, but erythromycin can significantly reduce symptoms or shorten the course of the disease;

Fourth, the titer of serum condensation is increased, one to 3 thirty-two or more, and the positive rate is 50% to 70%.After the onset of cold agglutinins, they begin to appear at the end of the first week, peak in three to four weeks, and disappear in two to four months.

Bacterial infections, including tuberculosis, and viral infections are negative, so it can be used to rule out bacterial viral pneumonia of tuberculosis;

5. Isolate the pathogen and culture mycoplasma from the patient's sputum, nose and pharynx, but it takes more than ten days, so the clinical significance is not great;

Sixth, the determination of serum-specific antibodies, including fluorescent antibodies, supplements combined with blood age inhibition, etc., are helpful in confirming the diagnosis, but are not used as routine examinations. Erythromycin and tetracycline are effective, but because infants and children before the age of eight take too much tetracycline, it can cause permanent yellow-brown teeth, and enamel dysplasia of deciduous teeth and permanent teeth is also more common, and can even temporarily hinder bone growth, as well as affect liver and kidney function.